Java 多线程多任务循环运行

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class ThreadManager {
	public List<Map<String, Object>> initList = new ArrayList<Map<String, Object>>();
	public int exit = 0;//0正常退出,-1异常退出
	public int countFlag = 3;//线程计数
	public static long count = 0;//加载次数计数器
	public boolean stop = false;//是否线程停止控制标识
	public String globalFlag = "";//控制标识位
	private ArrayList<WorkThread> workThreadList = new ArrayList<WorkThread>();////线程链表
	public ThreadManager(){
		Map<String,Object> map1 = new HashMap<String, Object>();
		Map<String,Object> map2 = new HashMap<String, Object>();
		Map<String,Object> map3 = new HashMap<String, Object>();
		map1.put("A",1);
		map1.put("B",2);
		map2.put("A", 1000);
		map2.put("B", 2000);
		map3.put("A", 21);
		map3.put("B", 22);
		initList.add(map1);
		initList.add(map2);
		initList.add(map3);
		for(int s=0;s<countFlag;s++){
			globalFlag +="0";
		}
		System.out.println("~~~初始化标识位:"+globalFlag);
	}
	public void start() {
		WorkThread 	worker;
		long startTime = new Date().getTime();
		long endTime = new Date().getTime();
		for (int i = 0; i < countFlag; ++i) {
			Map map = initList.get(i);
			worker = new WorkThread(this,i,map);
			workThreadList.add(worker);
			worker.start();//线程启动
		}
		
		while(!stop){
			boolean allFlag = true;
			for(int s=0;s<globalFlag.length();s++){
				if(globalFlag.charAt(s)!='1'){
					allFlag = false;
					break;
				}
			}
			if(allFlag){
				endTime = new Date().getTime();
				System.out.println("~~~~~~~~~~~~第 "+count+" 打印结束，总耗时："+(endTime-startTime)+" 毫秒~~~~~~~~~~~~");
				try {
					Thread.sleep(3000);
				} catch (NumberFormatException e) {
					e.printStackTrace();
				} catch (InterruptedException e) {
					e.printStackTrace();
				} 
				count++;
				//this.stop=true;
				clearGlobalFlag('0');
				startTime = new Date().getTime(); 
			}else{
				try {
					Thread.sleep(150);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}	
		}
		System.exit(this.exit);	
	}
	/**
	 * 清除标识位
	 */
	public synchronized void clearGlobalFlag(char c){
		char[] cst = new char[globalFlag.length()];
		for(int s=0;s<globalFlag.length();s++){
			cst[s] = c; 
		}
		globalFlag = new String(cst);
	}
	/**
	 * 修改指定位对应的标识符
	 * @param index
	 * @param c
	 * @return
	 */
	public synchronized boolean changeGlobalFlag(int index,char c){
		boolean bool = false;
		char[] cs = globalFlag.toCharArray();
		char[] cst = new char[cs.length];
		for(int s=0;s<cs.length;s++){
			if(s==index){
				cst[s] = c;
			}else{
				cst[s] = cs[s];
			}
		}
		globalFlag = new String(cst);
		bool = true;
		return bool;
	}
	public String getGlobalFlag(){
		return globalFlag;
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {	
		ThreadManager threadManager = new ThreadManager();
		threadManager.start();
	}
	public int getExit() {
		return exit;
	}
	public synchronized void setExit(int exit) {
		this.exit = exit;
	}
}

import java.util.Date;
import java.util.HashMap;
import java.util.Map;
public class WorkThread extends Thread{
    private ThreadManager threadManager;
    private Map<String, Object> map = new HashMap<String, Object>();
    private int index = 0;
    public WorkThread(ThreadManager threadManager,int index,Map<String, Object> map){
        this.threadManager=threadManager;
        this.index=index;
        this.map.putAll(map);
    }
    public void run() {
        while (!threadManager.stop) {
            int count = 0;
            long startTime = 0;
            long endTime = 0;
            String msg = "~~~ 线程"+index+" 打印Map信息";
            if(threadManager.getGlobalFlag().charAt(index)=='0'){
                startTime = new Date().getTime();
                System.out.println("--A--"+map.get("A")+"--B--"+map.get("B"));
                endTime = new Date().getTime();
                threadManager.changeGlobalFlag(index, '1');
                System.out.println("--耗时："+(endTime-startTime)+" 毫秒");
            }else{
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }    
        }
    }
}

输出结果：
~~~初始化标识位:000
--A--1--B--2
--耗时：0 毫秒
--A--1000--B--2000
--耗时：0 毫秒
--A--21--B--22
--耗时：0 毫秒
~~~~~~~~~~~~第 0 打印结束，总耗时：154 毫秒~~~~~~~~~~~~
--A--1000--B--2000
--耗时：0 毫秒
--A--21--B--22
--耗时：0 毫秒
--A--1--B--2
--耗时：0 毫秒
~~~~~~~~~~~~第 1 打印结束，总耗时：150 毫秒~~~~~~~~~~~~
--A--1--B--2
--耗时：0 毫秒
--A--1000--B--2000
--耗时：0 毫秒
--A--21--B--22
--耗时：0 毫秒
~~~~~~~~~~~~第 2 打印结束，总耗时：150 毫秒~~~~~~~~~~~~